Results 31 to 40 of about 251,601 (269)

Position control system via active disturbance rejection for laser optical systems

open access: yesRevista Iberoamericana de Automática e Informática Industrial RIAI, 2021
In this work, an Active Disturbance Rejection Control scheme for a Laser Beam Stabilization system is presented in a pragmatic way. First, a Linear Extended State Observer is designed, which allows estimating external disturbances, non-model dynamics ...
José Fermi Guerrero-Castellanos   +1 more
doaj   +1 more source

Near-optimal deterministic filtering on the rotation group [PDF]

open access: yes, 2011
—This paper considers the problem of obtaining minimum-energy state estimates for a system defined on the rotation group, SO(3). The signals of the system are modeled as purely deterministic signals.
Mahony, Robert.E.   +3 more
core   +1 more source

Research on Photovoltaic Grid-Connected Control Strategy Based on Active Disturbance Rejection of Adaptive Extended State Observer

open access: yesAdvances in Civil Engineering, 2021
In the photovoltaic inverter grid-connected power generation system, the output power of photovoltaic panels is affected by illumination and temperature. The change of output power of photovoltaic panels will lead to the fluctuation of DC bus voltage. If
Dejun Liu   +4 more
doaj   +1 more source

DC Bus Voltage Control of Wind Power Inverter Based on First-Order LADRC

open access: yesIEEE Access, 2022
The wind power grid-connected inverter system has the characteristics of non-linearity, strong coupling, and susceptibility to grid voltage fluctuations and non-linear loads.
Changsheng Yuan, Xuesong Zhou, Youjie Ma
doaj   +1 more source

On designing observers for time-delay systems with nonlinear disturbances [PDF]

open access: yes, 2002
This is the post print version of the article. The official published version can be obtained from the link below - Copyright 2002 Taylor & Francis LtdIn this paper, the observer design problem is studied for a class of time-delay nonlinear systems.
BOYD S.   +9 more
core   +1 more source

Personalizing the Pediatric Hematology/Oncology Fellowship: Adapting Training for the Next Generation

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT The pediatric hematology‐oncology fellowship training curriculum has not substantially changed since its inception. The first year of training is clinically focused, and the second and third years are devoted to scholarship. However, this current structure leaves many fellows less competitive in the current job market, resulting in ...
Scott C. Borinstein   +3 more
wiley   +1 more source

Static-Errorless Rotor Position Estimation Method Based on Linear Extended State Observer for IPMSM Sensorless Drives

open access: yesEnergies, 2022
This article presents a static-errorless rotor position estimation method based on the linear extended state observer (LESO) for interior permanent magnet synchronous motor (IPMSM) drives. Two second-order LESOs are utilized to estimate the α-β axis back-
Feng Jiang   +3 more
doaj   +1 more source

Contact-Aided Invariant Extended Kalman Filtering for Legged Robot State Estimation

open access: yes, 2018
This paper derives a contact-aided inertial navigation observer for a 3D bipedal robot using the theory of invariant observer design. Aided inertial navigation is fundamentally a nonlinear observer design problem; thus, current solutions are based on ...
Eustice, Ryan M.   +3 more
core   +1 more source

Adaptive sliding mode observers in uncertain chaotic cryptosystems with a relaxed matching condition [PDF]

open access: yes, 2006
We study the performance of adaptive sliding mode observers in chaotic synchronization and communication in the presence of uncertainties. The proposed robust adaptive observer-based synchronization is used for cryptography based on chaotic masking ...
Raoufi, R., Zinober, A.S.I.
core   +1 more source

Linear and Nonlinear Event-Triggered Extended State Observers for Uncertain Random Systems

open access: yesIEEE Transactions on Automatic Control
In this paper, linear and nonlinear event-triggered extended state observers are designed for a class of uncertain stochastic systems driven by bounded and colored noises. Two event-generators with an ensured positive minimum inter-event time for every sample path solution of the stochastic systems, are proposed for the designs of linear and nonlinear ...
Ze-Hao Wu   +3 more
openaire   +3 more sources

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